Unit 4 Test - Expressions and Equations

SOLVE.

50 = -2.5x

• X = 20

• X = -20

• X = 125

• X = -125

SIMPLIFY.

18M - 9V + 6V - 7M

• 11M - 3V

• 25M - 15V

• -11M + 3V

• -25M + 15V

FACTOR.

24a + 12b - 30

• 24 ( 2a + b - 6)

• 6 ( 12a + 6b - 15)

• 6 (4a + 2b - 5)

• -2 ( 12a + 6b - 15)

If x = -1, then which of the following equations makes a true statement?

• 4x + 9 = 20

• -4x - 5 = -15

• -3x + 15 = 18

• -5x - 15 = -22

Mark’s brother is five years older than Mark. Their combined ages add up to 23. How old is Mark?

• 9 years old

• 18 years old

• 5 years old

• 25 years old

Five sisters each bought matching scarves and two pair of socks. The scarves were priced at $12.00. If the total bill for all 5 sisters was $125.00, what was the price of one pair of socks?

• $12

• $8

• $6.50

• $10.75

( X - 3 ) / -2 = 9

• 24

• -24

• 15

• -15

Simplify.

1.8y - 9.3y - 6.3y

• -13.8

• 16.4

• -16.4

• 13.8

Solve.

X/8 + 6 = 32

• 3.25

• 304

• 208

• -206

Solve.

-3x - 10 = 32

• 14

• -14

• -7 1/21

• 7 1/21